uestion 18

Why is it generally easier to push a heavy object that is already moving instead of the same heavy object that is stationary

a
The force of gravity on the object is different if it is stationary or not.
b
The force of friction on the object is different if it is stationary or not
c
The force of the push on the object is different if it is stationary or not
d
The normal force on the object is different if it is stationary or not

1 answer

The correct answer is:

b. The force of friction on the object is different if it is stationary or not.

When an object is stationary, it experiences static friction, which typically requires more force to overcome compared to kinetic friction, which acts on an object that is already in motion. Hence, it is generally easier to push a heavy object that is already moving due to the lower force of kinetic friction.